In a suace pan place corn syrup and sugar. Cook over medium heat until sugar is dissolved, DO NOT LET IT COME TO A BOIL. Remove from heat. Mix peanut butter into syrup/sugar mixture. Pour over Rice Krispies and mix well. Spread onto greased pan and press down. Melt chocolate & butterscotch chips in microwave. Pour chips over Rice Krispies. Place in refrigerator and let harden.